Linear relations from regression equations, based on values from three submaximal work rates at test and retest, are illustrated as unbroken lines. dos can be higher, equal or lower at test compared to retest (see broken lines).
Another factor, likely to determine the degree of reproducibility, is the number and span of work rates that are used to establish the HR-VO2 relations. To enable systematic studies of these matters it is therefore important to specify the HR levels used in terms of both absolute levels and percentages of maximal HR as well as the heart rate reserve (HRR) [27,28]. The corresponding levels of VO2 and their percentage of the maximal oxygen uptake are also valuable to state (Fig 1). To our knowledge this has not been done before.
Given this background, the aim of the study was to evaluate day-to-day reproducibility of HR-VO2 regression equations (y-intercept, slope and correlation coefficient) and the estimated oxygen uptakes based on three levels of heart rates representative for everyday cycle commuting. Two HR-VO2 relations were established and compared, one with three levels of submaximal exercise (model 1), and www.datingranking.net/pl/caribbean-cupid-recenzja another which also included a maximal exercise (model 2). The HR-VO2 relations were attained on an ergometer cycle in the laboratory for healthy and physically active middle-aged male and female cycle commuters.
Users
Acceptance to help you perform the research is actually taken from the latest Stability Committee North of the Karolinska Institute at Karolinska Medical (Dnr 03–637), Stockholm, Sweden.
Employment regarding members.
The whole process of looking players is actually split up into numerous procedures. It come with adverts in 2 major early morning push from inside the Stockholm calling for people. The latest inclusion standards requisite staying at minimum 2 decades old; residing in the fresh State regarding Stockholm (leaving out the new town away from Norrtalje), and you may taking walks otherwise bicycling entirely, any distance, anywhere between house and place away from really works or studies, and you will definitely driving in this fashion at least one time a year. Solutions was sent in cost-totally free from the post, facsimile, e-mail or of the mobile. This type of ads triggered 2148 anyone volunteering when planning on taking area.
A questionnaire (The new Really Energetic Commuting inside the Greater Stockholm Questionnaire step one; PACS Q1, for it for the Swedish and you can English, select Help guidance S1 and you can S2 Methods) try sent to this type of volunteers; 2010 had been came back after about three reminders. The latest survey made-up thirty-five issues, but precisely the concerns related for buying our populace were utilized within investigation. Such incorporated gender, years, exactly how actually demanding its professional efforts was basically, commuting frequencies a week each day of the year and travelling years. This new travelling distance of any private was also used for looking for the study group. They certainly were measured to your paths consumed in charts by for every single respondent (For route mapping rules, see Help suggestions S3 and S4 Procedures). The procedure for measuring the brand new mapped range try explained in detail for the Schantz and you may Stigell . From the solutions from PACS Q1, the latest respondents was indeed divided in to categories predicated on its reported means away from both cycling or taking walks, otherwise joint modes.
Our very own decide to try are selected on cyclist group, we.age. those people victims just who simply cycled to get results. Most other criteria was indeed decades and you may channel ranges close to the average philosophy of men and women bikers, correspondingly . People and rated the every day top-notch perform given that really white otherwise most white.
Advice discussing the new emotional knowledge, make sure standardization procedures as well as a health statement was sent to new cyclists which fulfilled the newest standards (towards the advice procedure, discover Help recommendations S5 and you will S6 Procedures. Anyone pictured for the S5 and you may S6 Methods provides composed advised consent (since outlined when you look at the PLOS consent mode) to publish their image together with the manuscript. Regarding the missive page, the fresh new users was basically questioned whether their in earlier times removed route was still valid, or out of a similar length date-wise (equivalent identified as and/without 5 so you’re able to ten minutes). If so, they certainly were questioned to answer the medical declaration and that alarmed whether or not they had people: 1) cures and type off infection, 2) palpitations, boobs serious pain otherwise unusually big breathing throughout the do so, 3) hypertension, otherwise cuatro) had has just stopped or deserted take action having factors off burns or health. The newest page highlighted the legal right to cancel the newest examination at any some time and without the need to identify a description. A signed informed concur regarding involvement try returned.